JPH0299363A - Recorder - Google Patents

Abstract

PURPOSE:To prevent an unsatisfactory paper feed or a failure in paper feed by a method wherein a clutch is held in an initial state of a paper feed action by the rotation of a motor after a discharge recovery device or the like using the motor also as a drive source completes its predetermined action. CONSTITUTION:A discharge recovery device discharges a waste ink sucked from a cap 156 to a waste liquid recovery part by a pump 20. The drive force of the pump 20 is transmitted to a piston 201 through a transmission part, i.e., a recovery system gear 72 and a conversion cam 192, which is mounted on one end of a paper feed roller 7. With the reception of recording data from a data transfer device, a carriage 5 starts traveling on its travel path for releasing a locking claw 665 positioned on the opposite side of the recovery device 150. The release of the locking claw 665 makes a locking 664 free, thus enabling the rotation of a separation roller gear 662 to be transmitted to a separation roller shaft 65 and a pressure plate press-down cam 661. By driving a motor, the separation roller 65 and the pressure plate press-down cam 661 start rotating. A pressure plate 61 moves upwards by being energized by a pressure plate spring 62 to be depressed against the separation roller 65, and recording paper is fed into position along with the rotation of the separation roller 65.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a recording device, for example, a drive source for a recovery system for protecting the nozzle surface of a recording head in an inkjet recording device and eliminating defective ink in the nozzles. , relates to an inkjet recording apparatus in which the other power source in the recording apparatus is the same as the drive source for feeding recording paper.

[Prior Art] Conventionally, as a means for eliminating defective ink, etc. in the nozzles of an inkjet recording head, the nozzle surface is covered with a cap such as an elastic member, and negative pressure generated by a pump communicating with the cap is used to remove defective ink, etc. There was one that sucked ink from the nozzle and caused the nozzle to perform a recovery operation. Some models use a dedicated motor for the recovery system as the drive source for this pump, but in order to reduce costs and downsize the device, the motor for feeding and transporting the recording paper is also used as the drive source for the pump. It is numerical.

To this end, a spring clutch is installed at one end of the roller for conveying the recording paper, which transmits driving force when rotating in the opposite direction to the rotation for conveying the recording paper, so that the paper can be fed when rotating in the forward direction, and the recovery system pump can be driven when the roller is rotating in the reverse direction. It looks like this.

Further, the recording paper conveyance motor is configured to simultaneously drive a separation roller for paper feeding. The drive force transmission unit to the separation roller is provided with a spring clutch that transmits the power in one rotation direction, and when a pawl or the like is caught on one end of the spring clutch, the drive transmission is turned off and the pawl is released. Drive transmission is turned on. The paper feeding operation starts by removing the pawl using a plunger or a carriage carrying a recording head, and ends when the spring clutch engages the pawl again after the separation roller rotates.

[Problems to be Solved by the Invention] However, in the conventional example described above, when the recording paper conveyance roller is reversed to operate the pump, the spring clutch for feeding the paper normally spins idly, and its claw hook is in the wrong position. However, due to an increase in idling torque due to manufacturing variations in the spring clutch, fluctuations in the load torque of the entire paper feed group, etc., the spring clutch rotates in the reverse direction, and the spring clutch The initial state of paper feeding operation, in which a portion of the clutch is caught by the pawl, cannot be achieved.

For this reason, even if the plunger or carriage is operated to release the engagement of the claws during paper feeding, the separation roller will not reach the normal rotation position and the paper feeding operation will end, resulting in poor paper feeding or, in the worst case, A situation occurred in which paper could not be fed.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to rotate the motor to a predetermined full normal position when the drive motor of the sheet feeding section is reversely rotated for ejection recovery operation. An object of the present invention is to provide an inkjet recording device that can always maintain an initial state in paper feeding operation by rotating the inkjet recording device.

[Means for Solving the Problems] To this end, the present invention provides a paper feeding means for feeding a recording medium, a clutch for transmitting the rotation of a motor to the paper feeding means in one direction of rotation, and a rotation of the motor. means for using the element as a drive source for rotation in one direction and the opposite direction, and control means for rotating the motor in one direction when a predetermined operation using the motor as a drive source in the element is completed. shall be.

[Function] According to the above configuration, after completing a predetermined operation in an element such as a discharge recovery device that also uses a motor as a drive source,
The clutch is maintained in the initial state for paper feeding operation by the rotation of the motor.

[Example] Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is an external perspective view of an inkjet recording apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view of the main parts of the apparatus shown in FIG. Further, FIG. 3 is a partially enlarged view of the paper feeding mechanism section in FIG. 1.

In these figures, reference numeral 61 denotes a pressure plate, on which recording sheets are loaded to be supplied to the inkjet recording apparatus. Reference numeral 62 denotes a pressure plate spring attached to the back surface of the pressure plate 61, and the pressure plate 61 is biased upward by the pressure plate spring 62. 63
is a paper width regulating plate, which is disposed so as to be slidable on the pressure plate 61 and regulates its position according to the width of the recording paper stacked on the pressure plate 61. 65 is a separation roller that separates the recording sheets stacked on the pressure plate 61 one by one.Separation roller! N1651
Fixed. Reference numeral 652 denotes a circular pressing roller, one of which is provided on each side of the separation roller 65.
It is mounted so that it can rotate freely about t. One end of the separating roller 651 has a pressure plate pressing cam 6.
61 is fixed, and a roller gear 662 is rotatably loosely fitted roughly adjacent to the pressure plate push-down cam 661. A spring clutch 663 is disposed between the pressure plate push-down cam 661 and the separation roller gear 662, and the spring clutch 663 is connected to the lock ring 6 provided around the spring clutch 663.
64 is locked by the lock claw 665, the rotational force is not transmitted (off), and when the lock claw 665 is removed from the lock ring 664, and the lock ring 664 becomes free, the rotational force is transmitted (on). Here, the lock claw 665 is in a position where it is released from engagement with the lock ring 664 described above due to dynamic contact with a protrusion of the carriage 5, which will be described later.

A cam receiver portion 611 is formed on the pressure plate 61 at a position that engages with a pressure plate push-down cam 661 . As a result, when the pressure plate 61 is pressed down by the pressure plate push-down cam 861, the recording paper is separated from the separation roller 65 and the presser roller 652, and the push-down cam 661 is pushed down by the cam receiver 6.
11, the pressure plate 61 is pushed down by the pressure plate spring 62, and the recording paper is pressed against the minute 10-ra 65.

Further, a separation pad 66 for frictionally separating recording sheets one by one is provided on the downstream side of the pressure plate 61 in the paper feeding direction.
5 and presser roller 652. The pressing roller 652 has a circular shape in a cross section perpendicular to the roller shaft 651, and the separating roller 65 has an approximately semicircular arc shape in the same cross section, and the radius of the separating roller 65 is equal to the radius of the pressing roller 652. Make it slightly larger than the radius. As a result, the separation pad 66 is pressed against the separation roller 65 in the arc range, and the presser roller 652 is in contact with the separation roller 65 in the other range.
is pressed against.

Here, the diameter of the separation roller 65 is about 20 to 30+ nm, which is relatively small. As a result, as shown in FIG. 2, the angle α from the contact point of the pressure plate 61 with the separation roller 65 to the contact point of the separation pad 66 with the separation roller 65 increases, and therefore the leading edge of the recording paper picked up by the separation roller 65 If the angle of entry into the separation pad 66 is too large relative to the pressure plate 61, the pad spring 67
Separation performance is not impaired even if the separation vat pressure is small. A normal separation roller diameter (approximately 40 mm) requires a separation pad pressure of approximately 300 g, whereas a small diameter (approximately 20 mm) separation pad pressure is required.
~30 mm), it becomes possible to separate without any problem even when the weight is around 50 g.

Therefore, the pack tension received from the presser roller 652 and the separation pad 66 when the recording paper is fed by the paper feed roller 7 is reduced, making it possible to feed the paper stably.

Further, changes in the feed amount that occur when the trailing edge of the recording paper comes off from the presser roller 652 and separation pad 66 can also be suppressed.

Reference numeral 7 denotes a paper feed roller provided on a conveyance path for further conveying the recording paper fed by the above-mentioned paper feeding mechanism to a recording position facing the recording head, and 7 is a paper feed roller provided on a conveyance path that conveys the recording paper fed by the above-mentioned paper feed mechanism to a recording position facing the recording head. Pinch rollers 81 are arranged to pinch. Both ends of the pinch roller 81 are rotatably mounted on the pinch roller stay 8, which is biased by a pinch roller spring 82.

Further, the pinch roller stay 8 is rotatably mounted around a stay fulcrum 83. A paper guide 9 guides the recording paper fed from the paper feed mechanism to a position where it is sandwiched between the paper feed roller 7 and the pinch roller 81. 1O is a paper pressing plate that presses the recording paper from floating up from the pinch roller 81.

The paper feed roller 7 is driven by a motor (not shown), and at this time, the driving force is transmitted in one stage using gears, etc., and the paper feed roller 7 is decelerated so that one rotation of the motor feeds the paper by one recording line. It is a ratio. As a result, white streaks that occur at the joints of recording lines in recorded images due to paper feeding,
Eccentric components of the motor itself and motor gear that cause image deterioration, such as overlap, are canceled. Further, since the drive motor to the paper feed roller 7 is decelerated by one step and the driving force is transmitted using the minimum number of transmission elements, no extra error component is included.

Reference numeral 11 denotes a hot plate having a heater on its back side, which cooperates with a power supply section to be described later to promote ink fixation on the recording paper.

There is no practical problem as long as the temperature of the hot plate 11 is in the range of 40°C to 90°C. 12 is a paper discharge roller, and a paper discharge pinch roller 13 is provided opposite to this. The paper discharge pinch roller 13 has a wheel-like shape and presses the recording surface side of the recording paper at a point to prevent the recording surface from being smudged by rubbing or the like when the recording surface is incompletely fixed with ink. In addition, the feed speed of the paper ejection roller 12 is set several percent faster than the feed speed of the paper feed roller 7 to apply tension to the recording paper and to improve the close contact of the recording paper to the hot plate 11 and the flatness of the recording paper at the recording position. I try to keep it.

The hot plate 11 is located downstream of the recording element of the recording head 51 in the recording paper conveyance path, so that heat from the hot plate 11 is not applied directly to the recording element portion of the recording head 51. In addition, a gap is provided between the paper guide 9 and the hot plate 11, and the carriage 5
Detection by a paper width sensor formed of a reflective photosensor provided above is performed at the gap, thereby preventing false detection due to reflection from the guide or the like.

Reference numeral 15 denotes a guide shaft, which is engaged with the carriage 5 so as to be movable left and right on the shaft 15, and the carriage 5 has a rotation fulcrum that is coaxial with the motor 16 to which driving force is transmitted from the motor 16 via a belt 19. A pulley 171 is disposed on the tension plate 17, and a tension spring 172 is attached to the belt 19.
A constant tension is applied.

Further, the carriage 5 is rotatably mounted around the guide shaft 15, and the pressing portion 54 of the carriage 5 presses the surface of the pinch roller stay 8 due to its own weight. The pressing and pressing portion 54 forms a slider and slides on the pinch roller stay 8 as the carriage 5 moves. The material of the pressing portion 54 is made of a resin having particularly high sliding properties, such as Teflon. Further, the carriage 5 has a protrusion 55 near the connection with the recording head 51, and the protrusion 5
5 protrudes forward from the ejection surface of the recording head 51 by about 0.3 to 0.5 mm, but does not come into contact with the paper pressing plate 10 under normal conditions.

A recording head 51 has ejection orifices arranged in the paper feeding direction and ejection energy generating elements corresponding to each of the orifices. The position of the recording head 51 relative to the carriage 5 is determined by fitting the convex portion of the recording head 51 into the hole of the carriage 5 . Further, a fixed lever 52 is mounted on the carriage 5 so as to be rotatable about a fulcrum 525. This fixed lever 5
2 has an elastic portion that generates a pushing force when fixing the recording head 51 to the carriage 5, and engages the fixing lever hook portion of the lever 52 with the hook portion of the carriage 5. The fixing lever 52 is locked, and the recording head 51 is fixed to the carriage 5.

Further, the carriage 5 is provided with a paper width sensor for detecting the width of paper and the presence or absence of paper when the carriage 5 moves. This paper width sensor is installed so that the detection position is near the ejection orifice located at the most downstream position in the paper feeding direction of the ejection orifice of the recording head 51.Furthermore, it is installed near the part of the carriage 5 that engages with the upper guide f+N5. is provided with a protrusion 57 for releasing the engagement of the lock claw 665 of the paper feeding mechanism described above, which contacts the lock claw 655 at a predetermined position outside the recording area on the carriage centering path to release the engagement. , the carriage 5 has a cap positioning bin, which is used for positioning when the carriage 5 retreats to the position of the recovery device during non-recording and caps the recording element surface of the recording head 51.

150 is an ejection recovery device that caps the ejection surface of the recording head 51 and sucks ink;
The recording area is placed on one side outside the recording area in the movement path of the recording area.

FIG. 4 is an exploded perspective view showing details of the discharge recovery device.

In the figure, 156 is a cap that caps the ejection surface of the recording head 51, and the cap 156 includes a positioning lever 157 that engages with the positioning pin of the carriage 5 described above. Reference numeral 18 denotes an ink cartridge for storing ink to be supplied to the recording head 51, and includes a drain liquid collection section for storing drain ink sucked by capping.

Reference numeral 20 denotes a pump using a piston 201 with a one-way valve, which communicates with the cap 156 via a suction tube 202, and also communicates with the drain liquid collection section of the ink cartridge 18 via a drain dupe 203. As a result, the waste ink sucked by the cap 156 is discharged to the drain liquid collection section.

The driving force of the pump 20 is applied to a recovery system gear 72 provided at one end of the paper feed roller ruff. The signal is transmitted to the piston 201 via a transmission section such as the conversion cam 192.

Reference numeral 79 denotes a power supply unit, which is fixed on the bottom plate 1002 so that its heat dissipation plate is directly below the paper discharge tray.

The operation of the configuration described above will be described below.

During non-recording, the carriage 5 is attached to the cap 1 of the recovery device 150.
5B and is in a recording standby state. When recording data is received from the host computer or data transfer device, the carriage 5 is mounted on the moving path; +'1
Movement is started to release the lock claw 665 located on the opposite side from 150. When the lock claw 665 is released, the lock ring 664 becomes free and the separation roller gear 662
The rotation can be transmitted to the minute roller glaze 65 and the pressure plate push-down cam 661, and the separation roller 65 and the pressure plate push-down cam 681 begin to rotate by motor drive. After starting to drive the motor, the carriage 5 moves to a position that does not prevent the lock claw 665 from returning to the position where it can return due to its own elasticity (the position where it engages with the lock song 664),
stand by. When the pressure plate push-down cam 661 begins to rotate,
The pressure plate 61 moves upward under the force of the pressure plate spring 62 and comes into pressure contact with the separation roller 65, and as the separation roller 65 rotates, the recording paper is fed to the position of the separation pad 66. Here, only one sheet of recording paper is fed by the ladder separation roller 65 and the separation pad 66 to the position of the paper feed roller 7 and the pinch roller 81 within one rotation of the separation roller 651 . Rock song 664's claw is back to rock claw 66
When it reaches position 5, the rotation of the lock song 665 is blocked and the rotation of the separation roller 65 is stopped.

Normally, the paper feeding operation ends with one rotation of the separation roller 65, but if the length to the paper feed roller 7 is longer than the circumference of the separation roller 65 due to the configuration of the device, the separation roller 65 may be rotated multiple times. It turns out. In that case, the carriage 5 waits at the position where the engagement of the lock claw 665 is released until the final rotation begins. In paper feeding operation,
When the leading edge of the recording paper is detected by the paper edge sensor located between the paper feed roller 7 and the separation roller 55, the rotation of the paper feed roller rough is stopped after the recording paper is fed by a predetermined amount from that position. Paper feeding and recording paper cueing are completed.

Thereafter, the gear ridge 5 returns to the recovery device 150 side. At this time, a paper width sensor provided on the carriage 5 detects the paper width and the presence or absence of paper. If the paper feeding operation is performed normally, the width of the recording paper, that is, the size of the recording paper is detected, and no recording is made outside the recording paper. If no recording paper is detected, it is determined that there is a paper feed failure, an error occurs, and the process stops.

To prevent such a paper feeding failure from occurring, the disengagement operation of the lock claw 665 is performed at least twice when the carriage 5 is feeding the paper.

After paper feeding is completed as described above, the carriage 5 reciprocates in the width direction of the recording paper, and along with this, the λ and vertical feed rollers 7 feed the paper every time the recording head 51 records one line. Record while doing so. At this time, the gap between the recording head 51 and the recording paper surface is determined by the pressing portion 54 of the carriage 5 sliding on the pinch roller stay 8. In other words, the pinch roller stay 8 is connected to the pinch roller stay 8, and the -ra 8 is
1 is provided, so when recording paper enters between the paper feed roller 7 and the pinch roller 81, the pinch roller stay is moved accordingly.
8 moves to the carriage 5 side. Therefore, even if the thickness of the recording paper changes, the pinch roller stay 8 moves accordingly, so that a constant gap is always maintained.

The recorded recording paper passes over a hot plate 11 for fixing ink and is sent between a paper discharge roller 12 and a paper discharge pinch roller 13. The trailing edge of the recording paper is the paper feed roller 7 and the pinch roller 81
After the gap is removed, the paper ejection roller 12 and the paper ejection pinch roller 1
3, and after the final line has been recorded, the paper is sent to the paper discharge tray 1010. This paper output tray 10
The recording paper fed into the recording paper 10 is fixed with ink by the heat generated from the radiation plate of the power supply section 79 located directly below the paper discharge tray 1010.

By the way, when the recording paper is a thick paper such as an envelope or a postcard, when the recording paper comes off from between the paper feed roller 7 and the binding roller 81, the carriage protrusion 55 moves onto the paper presser plate IO that protrudes toward the carriage side due to the thickness of the paper. Since the recording head 51 slides directly, the ejection surface of the recording head 51 does not need to directly rub the surface of the recording paper.

The above operations complete recording on one sheet of recording paper, and the same operations are repeated thereafter.

FIG. 5 is a block diagram showing a schematic configuration of the above-described recording device (hereinafter referred to as a printer).

In the figure, 1100 is a host computer or data transfer device that sends image data line by line in the horizontal direction (print direction), and image data for each line is sent from the host computer (data transfer device) 1100 to the printer. is transferred at a clock rate of a predetermined frequency in response to a trigger signal 1160 from the control unit 1 (12Q'').

1020 is a control unit that controls the entire printer;
For example, Ml'U1021 such as a microprocessor
, a ROM that stores control programs for the MP port 1021, control procedures shown in flowcharts described later, data, etc.
1022 is used as a work area, and corresponds to, for example, a paper width, a count value calculated by calculating the number of data according to the paper width, and the count value. A port 023 that includes an area for storing the total number obtained by calculating the total number of receiving lines, and a counter 1024 that counts the number of paper feeds and the number of carriage feed pulses.
, a timer 1025 that measures time in response to instructions from the MPIJ 1021 and outputs an interrupt signal to the MP old 02 when the instructed time is counted, an I10 boat 1026 that inputs and outputs various data and control signals, and the like.

1300 is an image buffer memory that stores image data sent from the host computer 1100 at least for the number of print elements of the print head (128 lines in this embodiment); Control unit 1020
are sequentially stored in the image buffer memory 1300 under the control of the image buffer memory 1300. 1040 is a counter 1041f that can set the number of image data to be received for one line! : A receiving circuit that outputs a detection signal 1170 to the control unit 1020 when the control unit 1020 receives the set number of data.

Further, this receiving circuit 1040 is equipped with a black dot discrimination circuit 1042 that can identify the presence or absence of a black dot.

1050 is the recording head 5 from the image buffer memory 3
Data for a line (for example, 128 lines) corresponding to the number of recording elements of 1 is stored vertically one column at a time (128 dots).
This is a data converter that reads and outputs data corresponding to the recording position of the recording head 51.

The recording head 51 is an inkjet type recording head in which ink nozzles consisting of 128 ejection orifices and ejection energy generating elements corresponding to each ejection orifice are arranged in a row in the vertical direction, and perform printing by scanning in the horizontal direction. It is.

A driver 1070 drives the recording elements of the recording head 51 based on print data from the data converter.

16 is the aforementioned carriage motor that horizontally scans the carriage 5 on which the recording head 51 is mounted; 1090 is the carriage motor 1 according to control data from the control unit 1020;
This is a carriage motor driver that drives 6. 7
Reference numeral 1 denotes a paper feed motor capable of performing two paper feeds equal to the pitch between each recording element of the print head 51, and 1110 is a driver that drives the paper feed motor, Tough 1. Also,
Reference numeral 1120 is a cassette motor for a cassette feeder, and paper is fed from the cassette according to instructions from the host computer (data transfer device) 1100 or specifications from a key panel 1141 in the information management section 1140, which will be described later. 1130 is a drive driver that drives the cassette motor. In this embodiment, the carriage motor 16, paper feed motor 71, and cassette motor 1120 are constituted by stepping motors.

Reference numeral 1140 is an information processing unit that sends various information to the control unit 1020, and this information is output to the control unit 1020 as a detection signal 1180. The information human resources department 1140 is composed of the following elements. That is, 1141 is a key panel that can specify the paper size, for example, and can specify a paper size such as 84 or B5. 11
Reference numeral 42 denotes a paper END sensor used for positioning the leading edge and detecting the trailing edge of the recording paper during paper feeding.

Reference numeral 1143 denotes a paper width detection device, which is mounted on the carriage in this embodiment, and detects, for example, the width of the fed paper by this paper width detection device to prevent recording at a position other than the recording paper. Reference numeral 1144 is a cassette attachment detection section that detects whether or not a paper cassette feeder is attached, and 1145 is a cassette paper presence/absence detection section that detects the presence or absence of paper in the cassette. Furthermore, l'146 is an ink presence/absence detection unit that detects the presence or absence of ink in the ink cartridge that supplies recording ink to the recording head 51;
Reference numeral 1147 is an ink cartridge presence/absence detection section that detects the presence or absence of the ink cartridge. Reference numeral 1149 is a pump home position detection unit that determines the reference position of the cap mechanism and pump mechanism specific to the inkjet recording apparatus, and reference numeral 1410 is a carriage home position detection unit that determines the reference position membrane of the carriage 5 on which the recording head 51 is mounted. Further, 1141 is a door opening/closing detection unit that detects opening/closing of the door.

1150 is host l-computer (data transfer device) 1
These are command signals such as paper size and recording commands instructed by the computer 100, and the paper size can be specified not only from the information management section 1140 but also from the host computer 1100.

FIG. 6 is a flowchart of processing showing an embodiment of the present invention based on the configuration shown in FIGS. 1 to 5. Below, the 6th
The control processing of this embodiment will be explained with reference to the drawings.

First, in step Sl (hereinafter abbreviated as Sl. The same applies to other steps), the key panel 1141 of the information human resources department 1140
Determine whether the recovery key within is pressed.

If it has not been pressed, this process ends and the process proceeds to the next process; if it has been pressed, the process proceeds to S2. In this S2,
Since the recovery operation is performed by reverse rotation of the paper feed motor, it is necessary to stop the paper feed motor once. It is determined whether or not the paper feed motor 71 is stopped, and if it is not stopped, the process waits until it stops. do. When the motor 71 stops, the process proceeds to 53, where it is determined whether or not the ink cartridge for supplying ink used for the recovery operation is correctly inserted. If not, the process proceeds to S8, where it is determined that there is no error in the ink cartridge, and the process proceeds to error processing. move on. If there is an ink cartridge, the process advances to S4.

In this embodiment, since the capping operation of the ejection recovery system is performed using the movement of the carriage, it is determined whether or not capping has been performed depending on whether the carriage is at the home position.

Therefore, if the carriage is not at the home position, a carriage home position error is determined in S9 and the process proceeds to error processing in SlO. If the determination is affirmative, the process advances to step 55, where the counter 1024 of the control unit 1020 is provided with the number of driving pulses of the paper feed motor for sucking thickened ink near the ink ejection ports of the recording head or in the nozzles from the ink ejection ports. the paper feed counter and drive the paper feed motor in reverse rotation.

Next, in S6, it is determined whether or not the paper feed motor has stopped, and the process waits until it stops.

When the above-described series of recovery operations are completed, the process proceeds to S7, where the number of pulses for returning the spring clutch of the multi-feeder to the initial paper feeding position is set in the paper feed counter, and the paper feed motor is driven in forward rotation. Next, in step 511, it is determined whether or not the paper feed motor has stopped, and if it is in operation, it waits until it stops, and when it stops, this process ends and the process proceeds to the next process.

Although the above-mentioned embodiment describes an inkjet recording device, the application of the present invention is not limited to this, and the motor that powers the paper feeding operation is rotated in the opposite direction to the rotation in the paper feeding operation. The present invention can be applied when used as a power source for other elements, and therefore is not limited to inkjet recording apparatuses having an ejection recovery system.

[Effects of the Invention] As is clear from the above description, according to the present invention, after completing a predetermined operation in an element such as a discharge recovery device that also uses the motor as a drive source, the clutch performs a sheet feeding operation by the rotation of the motor. The first 1111 situation was maintained.

As a result, the balance is not only effective in eliminating paper feeding mistakes and paper feeding defects, but also eliminates the need to manufacture a clutch for paper feeding with high precision, and allows the use of inexpensive latches.

Further, there are many effects such as stable paper feeding even if the load on the paper feeding section varies.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of an inkjet recording apparatus according to an embodiment of the present invention, FIG. 2 is a main sectional view of the apparatus shown in FIG. 1, and FIG. 3 is a paper feeding mechanism section shown in FIG. 1. FIG. 4 is an exploded perspective view showing details of the ejection recovery device shown in FIG. 1, and FIG. 5 is a block diagram showing the control configuration of the inkjet recording device shown in FIGS. 1 to 3. 6 are flowcharts of processing showing an embodiment of the present invention. 5... Carriage, 7... Paper feed roller, 16... Cap, 17... Positioning lever 57... Protrusion, 65... Separation roller, 71... Paper feed roller, 72... ... Recovery system gear, 661... Pressure plate push-down cam, 662... Separation roller gear, 663... Spring clutch, 664... Lock ring, 665... Lock claw, 1021... MPU. 1022...ROM. 1023...RAM. 1024...Counter. Figure 3 Figure 4

Claims (1)

[Claims] 1) A paper feeding means for feeding a recording medium, a motor serving as a driving source for the paper feeding means, and rotation of the motor is transmitted to the paper feeding means in one direction of rotation. an element that uses the rotation of the motor as a drive source for rotation in a direction opposite to the one direction; 1. A recording device comprising: a control means for rotating the recording device in a certain direction.